CN102979807A - Internal combustion engine, crankshaft and method for manufacturing hollow crankshaft of internal combustion engine - Google Patents
Internal combustion engine, crankshaft and method for manufacturing hollow crankshaft of internal combustion engine Download PDFInfo
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- CN102979807A CN102979807A CN2012103257206A CN201210325720A CN102979807A CN 102979807 A CN102979807 A CN 102979807A CN 2012103257206 A CN2012103257206 A CN 2012103257206A CN 201210325720 A CN201210325720 A CN 201210325720A CN 102979807 A CN102979807 A CN 102979807A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
- F16F15/283—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same for engine crankshafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/08—Crankshafts made in one piece
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- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The disclosure relates to an internal combustion engine with at least one cylinder and a crankshaft in a hollow form. The crankshaft in the hollow form belong to a crank mechanism and a crank throw associated with the cylinder and at least two defined shaft sections are provided for each cylinder. The shaft sections are used for mounting and arranged at a distance to each other along a longitudinal axis of the crankshaft. Each crank throw has two crank cheeks arranged at a distance to each other and connected by connecting rod pins. Each crank cheek adjacent to the shaft sections has a flat side surface. The flat side surface is towards one of the shaft sections, is formed during machining of the shaft sections, extends perpendicular to the longitudinal axis, and surrounds the crankshaft in a configuration mode in which a ring-shaped belt extends along the peripheral direction.
Description
Related application
The application requires the preference at the European Patent Application No. No.11179988.8 of submission on September 5th, 2011, and its full content is incorporated this paper into by reference for all purposes.
Technical field
The disclosure relates to the explosive motor with the bent axle of at least one cylinder and hollow form.The disclosure also relates to the method for the bent axle of making this explosive motor.
Background technique
In view of the finiteness as the mineral oil storage of the raw material of the fuel that is used for obtaining moving explosive motor, people are devoted to reduce by structural measure the weight of explosive motor always, and then minimize the consumption of fuel.Be that the bent axle of hollow is a kind of effective measures that reduce weight with crankshaft designs,
For each cylinder of explosive motor, bent axle has crank throw and has at least two shaft portions, thereby these two shaft portions are set up along the longitudinal axis of bent axle and are spaced apart from each other and are used for installation shaft.Each crank throw comprises two crank webs of each interval and is connected to each other by rod journal.
Each cylinder of explosive motor has can axially movable piston, and this piston is directed in cylinder barrel, and it defines the combustion space of cylinder with cylinder barrel and cylinder head.Piston is used for the gas force that burning produces is passed to bent axle.In the case, the vibration reciprocating of piston moves and is converted into rotatablely moving of bent axle.For this purpose, piston is connected to connecting rod by wrist pin in hinged mode, and connecting rod further is installed on the rod journal of crankshaft crank movably.The bent axle that comprises piston, wrist pin and connecting rod also is called as crank mechanism.
The bent axle that is installed in the crankcase absorbs connecting rod power, and this connecting rod power is by burn in the combustion space gas force that obtains and be comprised of the inertial force of the unbalanced movement of engine part of fuel.
Bent axle enters torsional vibration under being driven by torsion, and described torsion changes in time and is introduced into bent axle via connecting rod.These torsional vibrations cause simultaneously because the radiation-induced noise of solid-borne noise and because the noise of solid-borne noise introducing body and explosive motor.
Also because Consumer's cognition, the noise that when they buy vehicle, more and more produces according to explosive motor and vehicle and or even fatefully according to this noise, so vibration is in the design of motor vehicle and explosive motor with to carry out be more and more important.
The torsional vibration of bent axle is passed to camshaft via crankshaft driving mechanism, and camshaft itself is gone back the involving vibrations system and can be encouraged particularly valve mechanism vibration of other system.In addition, the vibration of bent axle also is introduced into power train, and they also are passed to the tire of vehicle through this.
If bent axle is energized in characteristic frequency region, high torsional vibration amplitude then can appear, this in addition can cause fatigue fracture.This explanation vibration is not only relevant with Noise Design, even also need consider the intensity of bent axle.
Because be applied to high dynamic load on the bent axle by inertial force and gas force, so the design engineer is devoted to implement in full as far as possible inertia balance in the design explosive motor, that is to say the optimization inertia balance.In this case, term " inertia balance " comprises compensation or reduces outwards all measures of effect of inertial force.On this scope, inertia balance not only refers to inertial force and also refers to the moment that is caused by inertial force.
In this regard, a kind of solution is to manage to realize that the mode of optimizing as much as possible inertia balance coordinates the crank throw of bent axle, number and layout and the firing order of cylinder.
Six-in-line engine can be in this way by complete equilibrium.In three cylinder straight engines, one order inertia power and second-order inertia power equally can be by complete equilibriums by selection and the suitable firing order of suitable crank throw, and still, the moment that is caused by inertial force can not be balanced.
For example in six-in-line engine described above, inertia balance neither total energy realize completely, and therefore need to take other measures, for example, counterweight is set and/or at explosive motor at least one trunnion shaft is installed at bent axle.
The quality of crank mechanism, namely each quality of connecting rod, piston, wrist pin and piston ring can be converted into vibration equivalent quality and rotation equivalent mass.The inertial force of rotation equivalent mass can have its external action spare of plain mode balance by counterweight is set at bent axle.
More complicated by the rotatory inertia equilibrium of forces that the vibration equivalent quality causes.This rotating inertia force can be balanced by the counterrotating trunnion shaft is set, and described trunnion shaft provides corresponding weight.
Even if when rotating inertia force during by complete equilibrium, moment of inertia also can produce, because the inertial force of each cylinder acts on the midplane (mid-plane) of cylinder.In case, these moments can be further compensated by the trunnion shaft that weight is housed.
Providing of inertia balance not only increased the space and the cost that need, also increased fuel consumption.On the one hand, the fuel consumption of increase is caused by the extra weight that enlarges markedly overall weight.On the other hand, inertia balance also has considerable contribution to the rubbing action of explosive motor.
By above description be clearly: the quality that reduces crank mechanism is favourable, the maximum potential that bent axle has saving in weight as the heaviest parts of quality wherein.Use hollow crankshaft to cause falling low-quality crank mechanism and result and cause reduction be used to the counterweight that needs inertia balance.Under background of the present disclosure, bent axle is indicated as being hollow crankshaft, and wherein at least one shaft portion or at least one rod journal are hollow form, that is to say not to be by solid material but by the substitution material manufacturing that comprises cavity.In this case, being used for to the supply pipeline of crankshaft bearing or connecting rod bearing confession oil supply is not the cavity of above meaning, because these carry out the function outside economical with materials.
Use hollow crankshaft except reducing weight, also have advantage aspect noise emission and the inertia balance especially.To understand, because the bent axle of hollow form, the inertia equilibrium of forces can be exempted by integral body, because the noise that is caused by vibration is considered to not have problems, and need not to worry excitation in characteristic frequency region.The noise and the noise emission that cause producing owing to the quality of using hollow crankshaft to reduce reduce.
The torsional vibration of bent axle causes the fluctuation of the rotational speed that bent axle do not expect.In order to alleviate these rotational speed fluctuations, the quality of crank mechanism is increased by at bent axle flywheel being set usually.Because higher quality, the inertia of crank mechanism raises, and it is less sensitive for the rotational speed fluctuation, and such result makes rotatablely moving of bent axle become more even.Flywheel is in the quiet and accurate running of accelerating and be used between deceleration period to guarantee bent axle and the parts that are attached to bent axle.
The quality that reduces crank mechanism with hollow crankshaft also can and need to provide advantage aspect the flywheel in the problem of rotational speed fluctuation described above.
In the design hollow crankshaft, particularly, axle need to have the sufficient intensity aspect and have difficulties.In order to save material, equipment forces the complex structure of axle with the bent axle of cavity.In this case, the intensity of mechanical heavily stressed bent axle is weakened owing to save material.
Particularly, the transition region between shaft portion and the adjacent crank web is proved to be a problem.In the situation of making bent axle, the casting crankshaft blank is by again machining, and in addition, at least two shaft portions that are used for installing obtain the length of restriction and the diameter of restriction.In this case, the length of shaft portion is limited by the part that is known as tool withdrawal groove (relief grooves) usually, and each shaft portion is provided to crank web by this tool withdrawal groove its tail end in transition region.Tool withdrawal groove guarantees that also the diameter of stipulating is forming in the mach situation again.In this case, the crank web of each adjacent shafts part also obtains planar side, this planar side towards shaft portion and relatively the longitudinal axis of bent axle vertically extend and with endless belt with the configural way that along the circumferential direction extends around bent axle.It is the hollow crankshaft of the ring of constant width that International Application No. WO 03/016730A1 has described the band that forms the side.
Prior art
100 bent axles, the bent axle part
The longitudinal axis of 100a bent axle
200 crank throws
The 200a rod journal
The 200b crank web
300 shaft portions
400 sides
The 400a band
500 cavitys
500a cylinder recess part
600 counterweights
700 services
800 tool withdrawal grooves
Summary of the invention
The background that has relatively illustrated, a purpose of the present disclosure provides the explosive motor that is equipped with about the improved hollow crankshaft of previous system.Therefore, explosive motor comprises the bent axle of at least one cylinder and hollow form, described bent axle belongs to crank mechanism, and for each cylinder, it has the crank throw relevant with cylinder and the shaft portion of at least two restrictions, the shaft portion of described restriction is used for installing and being arranged in order to be spaced apart from each other along the longitudinal axis of bent axle, each crank throw has two crank webs being spaced apart from each other and they connect by rod journal, and each crank web of adjacent shafts part has planar side, this planar side during shaft portion and the machining at shaft portion, be formed and relatively longitudinal axis vertically extend and endless belt with the configural way that along the circumferential direction extends around bent axle, the width of radial measurement of band that wherein forms the side of at least one side changes along circumference.
The purpose of another part of the present disclosure is in order to indicate a kind of method of the bent axle of making this explosive motor.
At least one bent axle according to explosive motor of the present disclosure has the side that relative previous system is revised.Because do not have constant width according to the side of disclosure design but alternatively have the width that changes along circumference, so the local resistance square on the bent axle, specifically the resisting moment of the transition region between shaft portion and the adjacent crank web can be affected and can be set in the mode that arranges.
Comparative research shows that because the appropriate designs of side, the localized stress that acts on the bent axle transition region can be considerably reduced; External loading Deng size can be pre-arranged.
Thus, the disclosure based on the first purpose exactly by providing the explosive motor that is equipped with respect to the improved hollow crankshaft of previous system to be achieved.
The above advantage of this explanation and other advantages and feature will the description by following embodiment become very obvious with lifting separately or by reference to the accompanying drawings the time.
Should understand above-mentioned summary and only introduce in simplified form the concept of the selection that in embodiment, is described in further detail.It does not mean that key or the essential feature of determining claimed theme, and its protection domain is to be limited uniquely by claim.In addition, claimed theme is not limited to solve the mode of execution of addressing any shortcoming that any part of the present disclosure mentions.
Description of drawings
Fig. 1 is the schematic representation of motor.
Fig. 2 illustrates part according to the conventional bent axle of prior art with perspective view.
Fig. 3 illustrates the first embodiment's of explosive motor the part of bent axle with perspective view.
Fig. 4 is the flow chart that illustrates the method for making bent axle according to embodiment of the present disclosure.
Reference mark
1 bent axle, the bent axle part
The longitudinal axis of 1a bent axle
2 crank throws
The 2a rod journal
The 2b crank web
3 shaft portions
4 sides
The 4a band
4b constriction, recess part
5 cavitys
5a cylinder recess part
6 counterweights
7 supply pipelines
8 tool withdrawal grooves
Embodiment
The embodiment of such explosive motor is favourable, and the radial measurement width of band that wherein forms the side of each side changes along circumference.
In situation of the present invention, width is along perpendicular to the bent axle longitudinal axis and line measurement that intersect with this longitudinal axis.Form the local width of being with in this straight line measurement and through the distance of being with, described width changes in the situation that straight line rotates around axle.This equals width along the circumferential direction or changes along circumference.
According to the embodiment who discusses, not only at least one side or even each side are designed according to the disclosure, that is to say to be shaped as accurately to center in a circumferential direction the configural way that axle and its width change along circumference with the endless belt.Therefore, this crustal stress can be lowered in all transition regions of bent axle.
Such explosive motor is favourable, and half that wherein is positioned at towards described at least one side on the side of crank throw is larger than the area of half on being positioned at away from a side of described crank throw.
In situation of the present invention, a half side-view refers to the curved portion that covers 180 ° of angles.Two half form the side and cover 360 °, like this by limiting the side around bent axle.
According to the embodiment who discusses, the greater part of side should be positioned at the side towards crank throw, forms less half and be positioned at away from the part of the area on the side of crank throw.
Particularly, such explosive motor is favourable, and the band that forms described side in wherein said at least one side has with heart-shaped most advanced and sophisticated avette basic shape, and heart-shaped tip is positioned on a side of crank throw.
In this regard, such explosive motor is favourable, and the band that wherein forms the side of at least one side has recess part in the zone of rod journal.In the case, at least one side is as being limited in the zone of rod journal.
The appearance of this form of side may be because the following fact, and namely corresponding rod journal is designed to hollow and provides for this purpose the center hole that the crank web at relevant crank throw occurs.In this case, on a side of crank throw, extend along curved portion around center hole the side, and the neck-in of the side in this part that is to say on the longitudinal axis direction of axle crooked.
The embodiment of such explosive motor is favourable, and at least two shaft portions that wherein are used for installing are hollow form.At least the shaft portion that provides at two free ends of axle is made as hollow in simple mode, and in this case, cavity can partly or entirely use core to form during the casting crankshaft blank.Alternately, cavity can also form during machining.
In this regard, such explosive motor is favourable, and wherein at least two of hollow form shaft portions are provided with center recess part or hole.Center hole can be by drilling through or other cutting methods form in simple mode.The core that forms such aperture being used for of using during the casting operation can be removed after casting easily.
The embodiment of such explosive motor also is favourable, and wherein the rod journal of at least one crank throw is hollow form.
In this regard, the embodiment of such explosive motor is favourable, and wherein at least one rod journal of hollow form is provided with center of gravity recess part or the aperture on the crank web that appears at relevant crank throw.Shaft portion illustrated and hollow form connects or is connected in a similar manner with the formation of relevant cavity to be used.
In this regard, such explosive motor is favourable, and wherein each shaft portion in abutting connection with crank web has tool withdrawal groove at the end towards crank web.
Tool withdrawal groove is used for fixing the length of shaft portion, and the length of described part critically assists to determine the bearing capacity of plane bearing, and shaft portion also forms when bent axle is in installment state.In addition, tool withdrawal groove is so that the surface of machining shaft portion becomes possibility.
In any case, the embodiment of such explosive motor also is favourable, and wherein the shaft portion of contiguous crank web does not have tool withdrawal groove.
Specifically with reference to figure 1, it comprises the schematic representation of the cylinder that multi-cylinder internal combustion engine 10 is shown.Motor 10 can be at least part of be controlled via the input of input device 130 by the control system that comprises controller 12 and by vehicle driver 132.In this example, input device 130 comprises accelerator pedal and the pedal position sensor 134 that is used for producing proportional pedal position signal PP.
The firing chamber 30 of motor 10 can comprise cylinder wall 32, and piston 36 is placed in one.Piston 36 is connected to bent axle 40, and the to-and-fro motion of piston is converted into rotatablely moving of bent axle like this.Bent axle 40 can be attached to via middle speed variator system at least one driving wheel of vehicle.In addition, starter motor is attached to bent axle 40 via flywheel, thereby guarantees the starting operation of motor 10.
In this example, intake valve 52 and exhaust valve 54 can be controlled by cam-actuated system via cam-actuated system 51 and 53 separately.Cam-actuated system 51 and 53 each can comprise one or more cams and can utilize by in the cam profile conversion (CPS) that is used for changing air door operation, variable cam timing (VCT), Variable Valve Time (VVT) and/or lift range variable (VVL) system of controller 12 operation one or more.The position of intake valve 52 and exhaust valve 54 can be determined by position transducer 55 and 57 respectively.In alternate embodiments, intake valve 52 and/or exhaust valve 54 can be controlled by the electronics valve actuation mechanism.For example, cylinder 30 alternately comprises via the intake valve of electronics valve actuation mechanism control with via the exhaust valve of the cam-actuated mechanism controls that comprises CPS and/or VCT system.
Thereby fuel injector 66 be illustrated be attached directly to combustion cylinder 30 to wherein with the pulse width of the signal FPW that receives from controller 12 via electronic driver 68 direct fuel injection pro rata.In this way, fuel injector 66 provides and is known as being directly injected in the combustion cylinder 30 of fuel.Fuel injector for example can be installed in the side of combustion cylinders or the top of combustion cylinder.Fuel can be transported to fuel injector 66 by the fuel delivery system (not shown) that comprises fuel tank, petrolift and fuel rail.In certain embodiments, combustion cylinder 30 alternately or extraly comprises the fuel injector that is arranged in the intake duct 42, and it is configured to provide known fuel air road to spray in combustion cylinder 30 upstreams to intake duct.
Under the operator scheme of selecting, ignition system 88 can shift to an earlier date in response to the spark of controller signal SA provides ignition spark to combustion cylinder 30 via spark plug 92.Although show in certain embodiments the spark ignition parts, one or more other firing chambers of firing chamber 30 or motor 10 can be moved in or without ignition spark situation with the ignition by compression pattern.
The upstream that exhaust sensor 126 is illustrated in catalyst 70 is attached to air outlet flue 48.Sensor 126 can be any suitable sensor that is used to provide indication evacuating air/fuel ratio, for example general the or wide territory exhaust of linear oxygen sensors or UEGO(oxygen), two condition lambda sensor or EGO, HEGO(hot type EGO), NO
x, HC or CO sensor.Vent systems can comprise ignition catalyzer and bottom catalyzer, and gas exhaust manifold, upstream and/or air downstream-fuel ratio sensor.In one example, catalytic converter 70 can comprise a plurality of catalyzer bricks.In another example, can use each to have many emission control systems of a plurality of catalyzer bricks.In one example, catalyst 70 can be three-way catalyst or device.
Memory mechanism ROM (read-only memory) 106 can be by the programming of such mechanized data, and described mechanized data represents and can be carried out method described below and be expected but the instruction of other variants of specifically not listed by being used for of carrying out of processor 102.
As described above, Fig. 1 only illustrates a cylinder of multicylinder engine, and each cylinder similarly comprises it self one group of import/exhaust door, fuel injector, spark plug etc.
Fig. 2 illustrates a part according to the conventional bent axle 100 of prior art in the perspective view mode.Bent axle is attached to engine cylinder about Fig. 1 explanation as above, and the reciprocating linear motion of piston is converted to rotatablely moves.The bent axle part 100 that illustrates comprises crank throw 200 and two shaft portions 300, and these two shaft portions are provided so that along the longitudinal axis 100a of bent axle 100 and are spaced apart from each other and bent axle 100 be used for to be installed.Crank throw 200 comprises two crank web 200b, and they are spaced apart from each other and are connected to each other by rod journal 200a.Rod journal 200a is equipped with service 700, and it is used for to larger connecting rod bearing fuel feeding.Be arranged on counterweight 600 on the bent axle 100 and be used for the inertial force of balance rotating equivalent mass.
Each crank web 200b of adjacent shafts part 300 has planar side 400, its form towards shaft portion 300 and during the machining of shaft portion 300 and its relative longitudinal axis 100a vertical extend and endless belt 400a with the configural way that along the circumferential direction extends around bent axle 100.According to prior art, what form side 400 is the ring of constant width with 400a.Each shaft portion 300 the crank web 200b to adjacency in transition region provide tool withdrawal groove 800.
The bent axle part 100 that is illustrated in Fig. 1 is hollow form, and two shaft portions 300 are all for the cavity 500 of installing and the rod journal 200a of crank throw 200 has cylinder recess part 500a form.
Fig. 3 illustrates the first embodiment's of explosive motor the part of bent axle 1 with perspective view.Difference with respect to the embodiment of the prior art that is illustrated in Fig. 2 only is discussed, otherwise with reference to Fig. 2.Used the reference mark that corresponds to each other for identical parts.Bent axle 1 is an indefiniteness example of the bent axle 40 of Fig. 1.
Compare the part of the conventional bent axle that is illustrated in Fig. 2, the crank web 2b in the bent axle part 1 that illustrates among Fig. 3 has been provided on their side 4.Wherein form side 4 with the width of the radial measurement of 4a along circumferential variation.
What form side 4 has recess part 4b with 4a in the zone of rod journal 2a, side 4 is limited in the zone of rod journal 2a like this.Form obtaining thus with heart-shaped most advanced and sophisticated avette basic shape with 4a of side 4, heart-shaped tip is positioned at the side towards crank throw 2, and is concrete directly below the cylinder recess part 5a of connecting rod axle journal 2a.Cavity 5 crosses out from crank web 2b, that is to say towards crank web 2b open.
In this way, the side 4 of crank web 2a comprises the zone of the thickness 9a that an end reduces, then is transitioned into gradually the zone that the place, opposite end increases thickness 9b.Zone along circumferential axis (line 11 indications) to the thickness 9b that increases, zone from the thickness 9a that reduces on thickness, side increases.The side 4 of design has reduced acted on the stress on the bent axle 1 in the transition region under loading condition in this way.
The disclosure based on definite the referring to of second portion purpose make a kind of method of bent axle of the explosive motor of the above-mentioned type, it is realized by the following method, namely be limited in the first method step, the blank of hollow crankshaft is cast, and in the second method step, at least two shaft portions that are used for installing are machined, the length that each shaft portion is provided to limit and the diameter of restriction, each shaft portion in abutting connection with crank web provides tool withdrawal groove at the end towards crank web, and each crank web of adjacent shafts part obtains planar side, this planar side towards shaft portion and relatively the longitudinal axis of bent axle vertical extend and with the configurations of the peripheral annular band that along the circumferential direction extends around bent axle, and the width of its radial measurement changes along circumference.
Fig. 4 illustrates the method 400 for the manufacture of hollow crankshaft.Method 400 is included in the blank of 402 cast hollow crankshafts.404, at least two shaft portions are provided length and the diameter with restriction.406, at least two shaft portions are machined for installation.408, crank web is provided, and each has tool withdrawal groove.410, for each crank web obtains planar side.412, for each planar side obtains avette basic shape and heart-shaped most advanced and sophisticated.Then, withdraw from 400 methods.
Also be applied to according to method of the present disclosure about the content according to explosive motor explanation of the present disclosure.Make bent axle and comprise machining or the blank that before formed by casting method of machining again.Can be formed according to side of the present disclosure like this, blank must provide corresponding shape.Therefore, the side that forms by machining is such sectional plane, and namely it namely takes the part of casting crank web apart perpendicular to longitudinal axis and incision.The side forms by the material of removing crank web, and the therefore original-shape configuration of appreciable impact side also of crank web.
Being machined into when bent axle is installed of at least two shaft portions occurs, and therefore each shaft portion provides diameter by the length that limits and restriction, the essential characteristic amount of the plane bearing installation that this formation will form.In general, bent axle is installed in the crankcase, and top half of base chamber divides by cylinder block and forms and by dividing additional as the lower half of crankcase of food tray.In order to receive and install bent axle, at least two bearings are provided in bent axle, it is designing two portions normally, and comprises bearing support and the bearing cap that can be connected to bearing support in each.Bent axle is installed in the shaft portion zone, and shaft portion is provided to be spaced apart from each other and to be usually designed to along crankshaft center line to have the thickening axle journal.In this case, bearing cap and bearing support can be manufactured to the parts that separate or with the part of crankcase one, that is to say half part of crankcase.Cartridge housing can be set to the intermediate member between bent axle and the bearing.
In installment state, each bearing block is connected to corresponding bearing cap.Bearing support and bearing cap cooperate with cartridge housing as intermediate member suitably and are formed for the hole of receiving axes part.The hole is supplied to machine oil usually, that is to say lubricant oil, like this when crankshaft rotating, load bearing lubricating film with and the similar mode of plane bearing be formed on ideally between the internal surface and reference axis part in each hole.
In order to supply oil supply to bearing, the pump that machine oil is provided at least two bearings is provided, pump is supplied with machine oil to main oil gallery, from this main oil gallery device for cleaning pipeline at least two bearings via supply pipeline.
Such embodiment of the method is favourable, and the band that wherein forms the side of at least one side obtains with heart-shaped most advanced and sophisticated avette basic shape, and heart-shaped tip is positioned at the side towards crank throw.
Because heart-shaped most advanced and sophisticated, the width that forms the band of side reduces near the centre of crank throw.Described side has the retraction structure in the rod journal zone.
In the bent axle of manufacturing with the explosive motor of three cylinders, the embodiment of such method is favourable, and wherein bent axle is designed with three crank throws.
If three cylinders are set to form in upright arrangement, such modification is proved to be favourable, and wherein three crank throws are arranged on the bent axle, in order to be offset in a circumferential direction 120 °.By selecting suitable firing order, one order inertia power and second-order inertia power can be by complete equilibriums.In independent situation, the balance of the moment that is caused by inertial force can be exempted, and allows like this if use the weight of the bent axle of hollow form to save, and that is to say enough and exempts all sidedly.
Therefore, method and system described herein provides the bent axle that comprises crank throw, crank throw comprises the connecting rod of two crank webs and connecting crank plate, with two shaft portions, each shaft portion is attached to crank web, crank web includes the first area with the thickness that reduces and has the second area of the thickness of increase, and wherein the thickness of each crank web increases towards second area from the first area along circumferential axis.Bent axle is attached to the motor with three cylinders, and bent axle can comprise three crank throws.Two shaft portions and/or connecting rod can be hollow.
Many variants should understand that structure disclosed herein and method are essentially exemplary, and these specific embodiments should not be regarded as limiting meaning, because may be arranged.For example, above-mentioned technology can be applied to V-6, I-4, I-6, V-12, opposed 4 and other engine types.Theme of the present disclosure comprises various system disclosed herein and structure, and all novel and non-obvious combination and sub-portfolios of other features, function and/or character.
Claim has particularly pointed out and has been regarded as novel and non-obvious some combination and sub-portfolio.These claims may relate to " one " parts or " first " parts or its equivalent, but such claim should be understood to include the combination of one or more these parts, rather than must have or get rid of two or more these parts.Modification that can be by this claim or the proposition by the new claim in the application or the related application, and other combinations and the sub-portfolio of claimed disclosed feature, function, parts and/or character.Described claim, no matter be the protection domain that requires than original rights wider, narrower, be equal to or different, all should be regarded as being included within the theme of the present disclosure.
Claims (19)
1. explosive motor comprises:
At least one cylinder; With
The bent axle of hollow form, it belongs to crank mechanism and has the crank throw related with this cylinder and at least two limited shaft portions for each cylinder, described limited shaft portion be used for to be installed and is arranged in order to be spaced apart from each other along the longitudinal axis of described bent axle, each crank throw has two crank webs being spaced apart from each other and is connected by rod journal, and each crank web of adjacent shafts part has planar side, described planar side forms towards described shaft portion and during the described shaft portion of machining, and the configural way that relatively described longitudinal axis vertically extends and along the circumferential direction extend with the endless belt is around described bent axle, and the radial measurement width of band that wherein forms the side of at least one side changes along described circumference.
2. explosive motor as claimed in claim 1, the radial measurement width of described band that wherein forms the described side of each side changes along circumference.
3. explosive motor as claimed in claim 1 wherein is positioned at half area of described at least one side on described crank throw one side greater than being positioned at away from half the area on the side of described crank throw.
4. explosive motor as claimed in claim 1, the width of the described band of wherein said at least one side is from increasing along circumference on described crank throw direction away from described crank throw one side at least part of.
5. explosive motor as claimed in claim 1, the band that wherein forms the described side of described at least one side has with heart-shaped most advanced and sophisticated avette basic shape, and described heart-shaped tip is positioned at the side towards described crank throw.
6. explosive motor as claimed in claim 1, the band that wherein forms the described side of described at least one side has recess part in the zone of described rod journal.
7. explosive motor as claimed in claim 1 is hollow form at least two shaft portions installing wherein.
8. explosive motor as claimed in claim 7, wherein described at least two shaft portions of hollow form are provided with the center recess part.
9. explosive motor as claimed in claim 1, wherein the described rod journal of at least one crank throw is hollow form.
10. explosive motor as claimed in claim 9, wherein described at least one rod journal of hollow form is provided with the center recess part that the crank web at relevant crank throw occurs.
11. explosive motor as claimed in claim 1, wherein each shaft portion in abutting connection with crank web has tool withdrawal groove in the tail end towards crank web.
12. a method of making the explosive motor hollow crankshaft comprises:
Cast the blank of described hollow crankshaft; And
Machining is used at least two shaft portions of installation, each shaft portion is provided length with restriction and the diameter of restriction, each shaft portion in abutting connection with crank web is provided with tool withdrawal groove in the tail end towards crank web, and each crank web of adjacent shafts part obtains planar side, described planar side towards described shaft portion and with respect to the longitudinal axis of described bent axle vertical extend and with the endless belt with the configural way that along the circumferential direction extends around described bent axle, and the width of its radial measurement changes along circumference.
13. method as claimed in claim 12, the band that wherein forms the described side of at least one side obtains with heart-shaped most advanced and sophisticated avette basic shape, and described heart-shaped tip is positioned on a side of described crank throw.
14. method as claimed in claim 12 also comprise the bent axle made from the explosive motor of three cylinders, and wherein said bent axle is designed to three crank throws.
15. method as claimed in claim 14, wherein said explosive motor have three cylinders arranging in upright arrangement, and wherein said three crank throws are disposed on the described bent axle so that in a circumferential direction with 120 ° of skews.
16. a bent axle comprises:
Crank throw, described crank throw comprise two crank webs and connect the connecting rod of described crank web;
Two shaft portions, each shaft portion is attached to crank web, each described crank web comprises having the first area that reduces thickness and have the second area that increases thickness, and wherein the thickness of each crank web increases from described first area along circumferential axis towards described second area.
17. bent axle as claimed in claim 16, wherein said bent axle is attached to the motor with three cylinders, and described bent axle comprises three crank throws.
18. bent axle as claimed in claim 16, wherein said two shaft portions are hollow.
19. bent axle as claimed in claim 16, wherein said connecting rod is hollow.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11179988.8A EP2565473B1 (en) | 2011-09-05 | 2011-09-05 | Internal combustion engine having a crankshaft and method of manufacturing a crankshaft of such an internal combustion engine |
| EP11179988.8 | 2011-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979807A true CN102979807A (en) | 2013-03-20 |
| CN102979807B CN102979807B (en) | 2016-12-21 |
Family
ID=44905372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210325720.6A Active CN102979807B (en) | 2011-09-05 | 2012-09-05 | Explosive motor, bent axle and the method manufacturing explosive motor hollow crankshaft |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2565473B1 (en) |
| CN (1) | CN102979807B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972057A (en) * | 2016-05-31 | 2016-09-28 | 中国嘉陵工业股份有限公司（集团） | Method for lowering noise during working for large-displacement balance-shaft motorcycle engine |
| CN110741170A (en) * | 2017-06-07 | 2020-01-31 | 斯堪尼亚商用车有限公司 | Crankshaft and method of manufacturing crankshaft |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE537649C2 (en) * | 2013-12-20 | 2015-09-15 | Scania Cv Ab | Crankshaft and method of manufacturing a crankshaft |
| CN105864273B (en) * | 2016-05-31 | 2023-05-16 | 重庆嘉陵工业有限公司 | Crank of large-displacement balance shaft motorcycle engine |
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|---|---|---|---|---|
| BE457165A (en) * | 1900-01-01 | |||
| CH383083A (en) * | 1960-03-14 | 1964-10-15 | Schweizerische Lokomotiv | crankshaft |
| CN85108079A (en) * | 1985-10-18 | 1986-10-15 | 江宁平 | Interior wobble crank linkage mechanism and pressurized machine thereof |
| CN1178574A (en) * | 1995-03-14 | 1998-04-08 | 宝马公司 | Hypocycloidal crank mechanism for piston engines, engines especially for opposed-cylinder IC engines |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10140332C1 (en) | 2001-08-16 | 2003-04-24 | Daimler Chrysler Ag | lightweight crankshaft |
-
2011
- 2011-09-05 EP EP11179988.8A patent/EP2565473B1/en active Active
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2012
- 2012-09-05 CN CN201210325720.6A patent/CN102979807B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE457165A (en) * | 1900-01-01 | |||
| CH383083A (en) * | 1960-03-14 | 1964-10-15 | Schweizerische Lokomotiv | crankshaft |
| CN85108079A (en) * | 1985-10-18 | 1986-10-15 | 江宁平 | Interior wobble crank linkage mechanism and pressurized machine thereof |
| CN1178574A (en) * | 1995-03-14 | 1998-04-08 | 宝马公司 | Hypocycloidal crank mechanism for piston engines, engines especially for opposed-cylinder IC engines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972057A (en) * | 2016-05-31 | 2016-09-28 | 中国嘉陵工业股份有限公司（集团） | Method for lowering noise during working for large-displacement balance-shaft motorcycle engine |
| CN105972057B (en) * | 2016-05-31 | 2018-11-13 | 重庆嘉陵工业有限公司 | The method of sound when huge discharge balance shaft motorcycle engine reduces work |
| CN110741170A (en) * | 2017-06-07 | 2020-01-31 | 斯堪尼亚商用车有限公司 | Crankshaft and method of manufacturing crankshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102979807B (en) | 2016-12-21 |
| EP2565473A1 (en) | 2013-03-06 |
| EP2565473B1 (en) | 2014-04-16 |
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